Method

*Marinate tuna steaks in a little olive oil for an hour. Heat a large skillet on medium high heat, or place on a hot grill. Cook the steaks 2 to 3 minutes on each side until cooked through

2.

1 Whisk lemon juice, oil, shallot, thyme, basil, oregano, and mustard in medium bowl; season to taste with salt and pepper and set aside.

3.

2 Bring potatoes and 4 quarts cold water to boil in a large pot. Add 1 tablespoon salt and cook until potatoes are tender, 5 to 8 minutes. Transfer potatoes to a medium bowl with a slotted spoon (do not discard boiling water). Toss warm potatoes with 1/4 cup vinaigrette; set aside.

4.

3 While potatoes are cooking, toss lettuce with 1/4 cup vinaigrette in large bowl until coated. Arrange bed of lettuce on a serving platter (I used two serving platters, shown in the photos). Cut tuna into 1/2-inch thick slices, coat with vinaigrette. Mound tuna in center of lettuce. Toss tomatoes, red onion, 3 tablespoons vinaigrette, and salt and pepper to taste in bowl; arrange tomato-onion mixture on the lettuce bed. Arrange reserved potatoes in a mound at edge of lettuce bed.

5.

4 Return water to boil; add 1 tablespoon salt and green beans. Cook until tender but crisp, 3 to 5 minutes. Drain beans, transfer to reserved ice water, and let stand until just cool, about 30 seconds; dry beans well. Toss beans, 3 tablespoons vinaigrette, and salt and pepper to taste; arrange in a mound at edge of lettuce bed.